it looks like libattr-dev is missing from your system, needs to be apt-getted.

However, the use of 0710 is no longer officially supported for any development. Due to circumstances beyond our control, we had to cap the 0710 sqlcvs and svn repositories, and start fresh with the 0810 release.

Should you wish to do development work, You should:

(1) Install a working 0810 alpha2 environment.(2) Test to make sure it works okay for you(3) install an 0810 build server according to the "Building LinuxMCE 8.10" page on the wiki.(4) talk to us on #linuxmce-devel on irc.freenode.net and we can help you with development practices and try to get you oriented.